1. Division of Infectious Diseases, Department of Internal Medicine, Tygerberg Academic Hospital, Stellenbosch University, Cape Town, South Africa,
2. Department of Medicine, Johns Hopkins Hospital, Baltimore, MD, USA
3. Centre for Infectious Diseases, Stellenbosch University, Cape Town, South Africa, Departments of International Health and Epidemiology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, MD, USA
4. Division of Infectious Diseases, Department of Internal Medicine, Tygerberg Academic Hospital, Stellenbosch University, Cape Town, South Africa
5. Children's Infectious Diseases Clinical Research Unit (KID-CRU), Tygerberg Academic Hospital, Stellenbosch University, Cape Town, South Africa
6. Division of Infectious Diseases, Department of Medicine, George Washington University School of Medicine, Washington, DC, USA
7. Military Hospital, Centre for Infectious Diseases, Brussels, Belgium, Institute of Tropical Medicine, Department of Clinical Sciences, Antwerp, Belgium